JaLCDOI 10.18926/AMO/59950
FullText URL 74_3_199.pdf
Author Fujita, Hirofumi| Bando, Tetsuya| Oyadomari, Seiichi| Ochiai, Kazuhiko| Watanabe, Masami| Kumon, Hiromi| Ohuchi, Hideyo|
Abstract Dickkopf 3 (Dkk3) is a secreted protein belonging to the Dkk family and encoded by the orthologous gene of REIC. Dkk3/REIC is expressed by mouse and human adrenal glands, but the understanding of its roles in this organ is still limited. To determine the functions of Dkk3 in the mouse adrenal gland, we first identified that the mouse Dkk3 protein is N-glycosylated in the adrenal gland as well as in the brain. We performed proteome analysis on adrenal glands from Dkk3-null mice, in which exons 5 and 6 of the Dkk3 gene are deleted. Twodimensional polyacrylamide gel electrophoresis of adrenal proteins from wild-type and Dkk3-null mice revealed 5 protein spots whose intensities were altered between the 2 genotypes. Mass spectrometry analysis of these spots identified binding immunoglobulin protein (BiP), an endoplasmic reticulum (ER) chaperone. To determine whether mouse Dkk3 is involved in the unfolded protein response (UPR), we carried out a reporter assay using ER-stress responsive elements. Forced expression of Dkk3 resulted in the induction of distinct levels of reporter expression, showing the UPR initiated by the ER membrane proteins of activating transcription factor 6 (ATF6) and inositol-requring enzyme 1 (IRE1). Thus, it is possible that Dkk3 is a physiological ER stressor in the mouse adrenal gland.
Keywords Dkk3 knockout mouse adrenal gland glucose-regulated protein 78 proteome endoplasmic reticulum stress
Amo Type Original Article
Published Date 2020-06
Publication Title Acta Medica Okayama
Volume volume74
Issue issue3
Publisher Okayama University Medical School
Start Page 199
End Page 208
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2020 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 32577017
Author Hamada, Yoshimasa| Bando, Tetsuya| Nakamura, Taro| Ishimaru, Yoshiyasu| Mito, Taro| Noji, Sumihare| Tomioka, Kenji| Ohuchi, Hideyo|
Published Date 2015-09
Publication Title Development
Volume volume142
Issue issue17
Content Type Journal Article
Author Ohuchi, Hideyo|
Published Date 2013-12-02
Publication Title 岡山医学会雑誌
Volume volume125
Issue issue3
Content Type Journal Article